Why does a male coworker avoid eye contact with me at work?

I recently started a new job and I noticed that most of the guys would not make eye contact with me. A couple of them visibly became more comfortable engaging with me after a while but this one 21 year old looks right through me or acts as if I’m not there when we cross paths. No negative experience has taken place. It comes off as weird. Not sure what it means. I’m curious so I need some insight lol

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3 d
A lot of these responses made me laugh. I never made any assumptions lol I’m not there to chat either. Just a behavior I noticed and was curious about. Thank you to those who aren’t throwing negative energy around.
Why does a male coworker avoid eye contact with me at work?
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